ncurses 5.6 - patch 20080607
[ncurses.git] / ncurses / base / lib_delwin.c
index 89d8e7c32ece398bb1126cc7e685ccc82429fdce..b92c403359584a220126716946a110cd927d671f 100644 (file)
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998,2000,2001 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2007,2008 Free Software Foundation, Inc.              *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
@@ -40,7 +40,7 @@
 
 #include <curses.priv.h>
 
-MODULE_ID("$Id: lib_delwin.c,v 1.13 2001/08/26 00:40:20 tom Exp $")
+MODULE_ID("$Id: lib_delwin.c,v 1.17 2008/06/07 14:10:56 tom Exp $")
 
 static bool
 cannot_delete(WINDOW *win)
@@ -48,7 +48,7 @@ cannot_delete(WINDOW *win)
     WINDOWLIST *p;
     bool result = TRUE;
 
-    for (p = _nc_windows; p != 0; p = p->next) {
+    for (each_window(p)) {
        if (&(p->win) == win) {
            result = FALSE;
        } else if ((p->win._flags & _SUBWIN) != 0
@@ -63,16 +63,24 @@ cannot_delete(WINDOW *win)
 NCURSES_EXPORT(int)
 delwin(WINDOW *win)
 {
+    int result = ERR;
+
     T((T_CALLED("delwin(%p)"), win));
 
-    if (win == 0
-       || cannot_delete(win))
-       returnCode(ERR);
+    if (_nc_try_global(curses) == 0) {
+       if (win == 0
+           || cannot_delete(win)) {
+           result = ERR;
+       } else {
 
-    if (win->_flags & _SUBWIN)
-       touchwin(win->_parent);
-    else if (curscr != 0)
-       touchwin(curscr);
+           if (win->_flags & _SUBWIN)
+               touchwin(win->_parent);
+           else if (curscr != 0)
+               touchwin(curscr);
 
-    returnCode(_nc_freewin(win));
+           result = _nc_freewin(win);
+       }
+       _nc_unlock_global(curses);
+    }
+    returnCode(result);
 }